title: Radioactivity variations in cobalt-57 cyanocobalamin capsules.
authors.forename: E B
authors.initials: EB
authors.lastname: Silberstein
mesh_terms: D002214:Capsules; D003037:Cobalt Radioisotopes / Q000592:standards*; D014805:Vitamin B 12 / Q000592:standards*
chemical_list: D002214:Capsules; D003037:Cobalt Radioisotopes; D014805:Vitamin B 12